Two-Body Interaction Calculation Circuit and Many-Body Problem Calculation Device that Uses this Circuit

摘要

The object of the present invention is to provide both a two-body interaction calculation circuit that can reduce the number of arithmetic elements of a circuit for virial calculation and that can decrease circuit scale and a many-body problem calculation device that uses this two-body interaction calculation circuit, the two-body interaction calculation circuit of the present invention including: a coordinate difference calculation unit for receiving as input coordinates of center particles i, the size of a basic cell, lattice vectors, and coordinates of particles j and for calculating the difference between coordinates of a center particle i and coordinates in which the coordinates of a particle j have been converted to a mirror-image particle; a distance-squaring calculation unit for calculating the square of distances based on the difference; a function calculation unit for calculating an interaction function that depends on distance based on the square of distance; a force calculation unit for calculating force from the interaction function and the difference; a sum-total calculation unit for calculating the sum-total of force for particles i based on force; and a virial calculation unit for calculating virials based on the sum-total of force.